Re: [boost] [pool] Objects of varying sizes

Subject: Re: [boost] [pool] Objects of varying sizes
From: Robert Dailey (rcdailey.lists_at_[hidden])
Date: 2012-06-26 14:02:53

On Tue, Jun 26, 2012 at 12:48 PM, Cory Nelson <phrosty_at_[hidden]> wrote:

> On Fri, May 4, 2012 at 2:14 PM, Robert Dailey <rcdailey.lists_at_[hidden]
> >wrote:
>
> > Is it possible to create a pool for polymorphic types? For example:
> >
> > class A;
> >
> > class B : public A;
> > class C : public A;
> >
> > I want to create a pool of type A, but the allocation can be for B or C
> at
> > any time. Will this work?
> >
>
> For performance reasons, you'll only be able to allocate objects of a fixed
> size. You might try a pool of variant<B,C> instead.
>
> For a variable-sized pool, as an implementation detail most runtime
> environments do implement a variable-sized pool behind the scenes for
> malloc/new.

So are you saying it isn't beneficial or practical to use boost::pool to
allocate chunks of varying sizes, and that the Windows Memory Manager is
better suited?